| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB 25286.1-2010 | English | RFQ |
ASK
|
5 days [Need to translate]
|
Non-electrical equipment for potentially explosive atmospheres -- Part 1: Basic method and requirements
| Obsolete |
GB 25286.1-2010
|
PDF similar to GB 25286.1-2010
Basic data | Standard ID | GB 25286.1-2010 (GB25286.1-2010) | | Description (Translated English) | Non-electrical equipment for potentially explosive atmospheres -- Part 1: Basic method and requirements | | Sector / Industry | National Standard | | Classification of Chinese Standard | K35 | | Classification of International Standard | 29.260.20 | | Word Count Estimation | 30,333 | | Date of Issue | 2010-11-10 | | Date of Implementation | 2011-09-01 | | Quoted Standard | GB 3836.1-2010; GB 3836.2-2010; GB 3836.12-2008; GB 12476.2-2010; GB 25285.1-2010; GB 25285.2-2010; GB/T 1690-2006; GB/T 15706.1; GB/T 20138-2006; EN 50303; "Coal Mine safety Regulations" (January 21, 2010 release of the National Security State Administration of Work Safety Order No. 29 " on amending some provisions of the | | Adopted Standard | EN 13463-1-2001, MOD | | Regulation (derived from) | Announcement of Newly Approved National Standards 2010 No. 8 (No. 163 overall) | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This Chinese standard provides for the gas, vapor, mist and air, as well as dust and air to form potentially explosive atmospheres Africa electrical equipment design, construction, testing and marking of the basic methods and requirements. This standard applies to an atmospheric pressure of 0. 08 MPa-0. 11 MPa, the ambient temperature is -20��C ~ +60��C environment. Such environmental conditions may also occur inside the device. This is because the pressure inside the device and/or temperature fluctuations in the formation of natural breathing, so that the outside air sucked inside the device. | GB 25286.1-2010: Non-electrical equipment for potentially explosive atmospheres -- Part 1: Basic method and requirements
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Non-electrical equipment for potentially explosive atmospheres.Part 1. Basic method and requirements
ICS 29.260.20
K35
National Standards of People's Republic of China
Non-electrical equipment for explosive atmospheres
Part 1. Basic method and requirements
Part 1. Basicmethodandrequirements
Published 2010-11-10
2011-09-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China issued
Table of Contents
Introduction Ⅲ
1 Scope 1
2 Normative References 1
2 3 Definitions
4 Equipment category and protection level 4
5 5 ignition hazard assessment method
8 6 Temperature
Non-metallic parts of the device 9 7
8 apparatus outer member 10 containing light metals
9 10 removable parts
Bonding material 10 10
Grounding conductive member 11 connected to the part 11
12 Transparent member 11
Inspection and testing type 13 11
14 signs 14
15 Instructions 17
Annex A (normative) method to confirm the device level 18
Annex B (informative) ignition hazard assessment 19
Electrification (normative) non-conductive material 23 Experimental Appendix C
Exemplary test apparatus Annex D (normative) Impact 24
Annex E (normative) obtain proof certificate of inspection procedures 25
Foreword
All technical contents of this section is mandatory.
GB 25286 "non-explosive atmospheres Electrical Equipment" contains the following sections.
--- Part 1. Basic method and requirements;
--- Part 2. limiting shell type "fr";
--- Part 3. type flameproof enclosure "d";
--- section 4. intrinsically safe type "g" (under consideration);
--- Part 5. Structure safe "c";
--- Part 6. Control type ignition source "b";
--- part 7. Pressurized "p" (under consideration);
--- Part 8. liquid immersion "k".
This part of GB 25286 "non-explosive atmospheres electrical equipment" Part 1, modified in the technical content adopted EN13463-1.
2001 'non-potentially explosive atmospheres Electrical Equipment Part 1. Basic method and requirements "(in English) developed.
This section and EN13463-1.2001 is the main difference. In order to converge with GB 3836.1 type statements, this section
EN13463-1. in 2001 M1, M2 respectively correspond to stage device Ma, Mb stage portion of the present apparatus; and EN13463-1.2001 in Ⅱ
Class G-1,2,3 device section respectively correspond to the present type Ⅱ Ga, Gb, Gc-level device; the EN13463-1.2001 Ⅱ in Class 1 Class D,
Level 3 corresponds to a portion of the apparatus are Class Ⅲ Da, Db, Dc stage equipment; flag also made the corresponding change; Further, increased attachment normative
Appendix E to obtain proof certificate of inspection procedures, deleted EN13463-1.2001 nothing to do with this part of the informative annex ZA.
Appendix A of this section, appendix C, and Appendix E Appendix D is a normative, Annex B is an informative annex.
This section was proposed by China Electrical Equipment Industrial Association.
This part of the jurisdiction of the National Standardization Technical Committee explosion-proof electrical equipment.
This part was drafted. Nanyang Explosion Electric Institute, the national explosion-proof electrical products for Quality Supervision and Inspection Center, Zhengzhou Electric Yongbang
Co., Ltd., Shanghai Institute of Industrial Automation Instrumentation, Changzhou Power Station Auxiliary Equipment Factory Co., Ltd., Zhejiang Hangzhou Construction Machinery Co., Ltd.
This part of the main drafters. Zhang Gang, Wang Jun, Liu Heng Yun, Zhang Qingjiang, force Zhang Xian, Xu Jianping, ginger orientation, Huang Xiaoping.
This section was first released in 2010.
Non-electrical equipment for explosive atmospheres
Part 1. Basic method and requirements
1 Scope
This section provides for a gas, vapor, mist and air, and the potentially explosive atmospheres dust with air to form electrical devices in Central Africa
Design, construction, and testing requirements of the basic method and the flags.
This section applies to the atmospheric pressure is 0.08MPa ~ 0.11MPa, ambient temperature environment of -20 ℃ ~ 60 ℃. Such rings
Environmental conditions may also occur inside the device. This is due to the intra-equipment operating pressure fluctuations and/or temperature will form natural breathing, external
Atmosphere into the interior of the device.
Environment does not belong to the above apparatus, the design, construction, testing and marking, also refer to this section. But in this case, the device
Ignition hazard assessment, ignition protection, provided additional test (if required), manufacturer of technical documentation and instructions for use should clearly demonstrate and say
Ming equipment with these conditions may be encountered adapt.
Note 1. This portion does not include a range beyond its effective use, such as additional oxygen-rich environment of the marker device.
This section specifies the class of explosive atmospheres Ⅰ, Ⅱ and class Ⅲ design and construction of all levels of the apparatus.
This section supplemented by the following specific types of ignition protection standards.
Note 2. These criteria are.
Non-electrical equipment explosive atmospheres - Part 2. limiting type housing (fr);
Non-electrical equipment explosive atmospheres - Part 3. flameproof enclosure type (D);
Non-electrical equipment explosive atmospheres - Part 5. Safety type structure (C);
Non-electrical equipment explosive atmospheres - Part 6. controlling ignition source type (B);
Non-electrical equipment explosive atmospheres - Part 7. positive pressure (P);
Non-electrical equipment explosive atmospheres - Part 8. liquid immersion type (K);
For gas and/or coal dust based Ⅰ Ma level equipment environment (under development).
NOTE 3. If you can not avoid all effective ignition source, type of equipment is also Ⅱ inertization predetermined by GB 25285.1, inhibition, or closed ventilation measures
Shi, diluted class Ⅰ is predetermined by the device in GB 25285.2, venting, shut-down and monitoring measures to prevent explosion. These prevent explosions
Measures not within the scope.
Note 4. This section provides a control method of a risk of causing ignition of the explosive atmosphere by the device. Some of dust cloud is generated based on the normal operation of the inner housing
Dust-type processing apparatus, these methods can not meet the requirements. This situation should be used or a predetermined GB 25285.1-2010 6.5
A protection system. Measures taken to limit the ignition system of coal mine action can be found in the provisions of GB 25285.2-2010 6.5. In this way protection
Device is not a part of this category.
2 Normative references
Terms of the following documents constitute provisions of this section by reference in this part of GB 25286. For dated reference documents
Pieces, all subsequent amendments (excluding corrections) or revisions do not apply to this section, however, encouraged to reach under this section
Whether the parties to the agreement to use the latest versions of these documents. For undated reference documents, the latest versions apply to this
section.
GB 3836.1-2010 explosive atmospheres - Part 1. General requirements for equipment (IEC 60079-0.2007, MOD)
GB 3836.2-2010 explosive atmospheres - Part 2. the device by a flameproof enclosure "d" protected (IEC 60079-1.2007,
MOD)
GB 3836.12-2008 explosive atmospheres - Part 12. a mixture of gases or vapors according to their maximum experimental safe gaps and most
Small ignition current classification (IEC 60079-12. 1978, IDT)
GB 12476.2-2010 combustible dust electrical equipment - Part 2. Selection and installation (IEC 61241-14.2004,
IDT)
GB 25285.1-2010 explosive atmospheres explosion prevention and protection - Part 1. Basic Principles and Methods
GB 25285.2-2010 explosive atmospheres explosion prevention and protection - Part 2. Basic Principles mine explosion prevention and protection
And methods
GB/T 1690-2006 vulcanized rubber or thermoplastic rubber test method of resistance to liquids (MODISO 1817.2005)
GB/T 15706.1 basic concepts of mechanical safety and General Design - Part 1. Basic terminology and methods (ISO 12100-1.
2003, IDT)
GB/T 20138-2006 housing electrical equipment against external mechanical impact protection level (IK code)
EN50303 for gas and/or equipment class Ⅰ M1 stage dust environment
State Administration of Work Safety, "Coal Mine Safety Regulations" (January 21, 2010 issued Decree No. 29 "About modification < mine
Safety Regulations > decision "part of the terms of, since March 1, 2010 execution)
3 Terms and Definitions
The following terms and definitions apply to this section.
3.1
Equipment equipment
Alone or in combination, for energy generation, transmission, storage, measurement, control, conversion and/or material processing, and because of its potential
Ignition source can cause an explosion in the machinery, equipment, stationary or mobile device, control unit, or prevention and detection apparatus system.
Note. If a device provided to the user as a whole, comprises internal connectors, such as fasteners, fittings, etc., these components are considered part of the device.
3.2
Equipment level equipmentcategory
3.2.1.
Class Ⅰ Ma stage apparatus equipmentgroupⅠ, categoryMa
The design and configure special additional protective measures if necessary, so that it can be run in accordance with the operating parameters set by the manufacturer, and to ensure with
Have a high level of protection.
The upper level apparatus for underground coal mine gas and have gas and/or combustible dust hazardous ground device.
The level of equipment required in the explosive atmosphere, even in a rare fault device can maintain its function, and its protection
Measures should achieve.
--- when a protection measure fails, there is at least a second independent protective measures provide the necessary level of protection; or
--- when two independent faults occur simultaneously, it can still ensure the level of protection provided.
Note. Class Ⅰ equipment should follow the national "coal mine safety regulations" requirement.
3.2.2.
Class Ⅰ Mb stage apparatus equipmentgroupⅠ, categoryMb
It should be designed so that it can function in accordance with the operating parameters set by the manufacturer, and to ensure a high level of protection.
The apparatus for this level and there may be a coal mine coal mine methane gas and/or combustible dust hazardous ground device.
The level of equipment downtime in the explosive atmosphere.
Under normal operation and more severe operating conditions, in particular rough handling and environmental conditions change, the protection level of the device
Can still ensure the level of protection provided.
Note. Class Ⅰ equipment should follow the national "coal mine safety regulations" requirement.
3.2.3
Class Ⅱ Ga stage apparatus equipmentgroupⅡ, categoryGa
It should be designed so that it can function in accordance with the operating parameters set by the manufacturer, and to ensure a high level of protection.
The level apparatus for explosive mixture of gas, vapor, mist and air to form consecutive, long or frequent presence of explosive
Fried environment.
The level of equipment should ensure the protection level prescribed level, is still guaranteed even in case of a rare malfunction of the equipment required
Level of protection, its protection measures should achieve.
--- when a protection measure fails, there is at least a second independent protective measures to provide the necessary level of protection; or
--- When two separate faults occur simultaneously, should ensure that the level of protection provided.
3.2.4
Class Ⅱ Gb stage apparatus equipmentgroupⅡ, categoryGb
It should be designed so that it can function in accordance with the operating parameters set by the manufacturer, and to ensure a high level of protection.
Explosive environments mixture gas, vapor, mist and air to form the apparatus for that level may occur.
The level of equipment, even in case of equipment failure or interference frequently occurs usually must be considered, it should also ensure that the protection provided
level.
3.2.5
Class Ⅱ Gc stage apparatus equipmentgroupⅡ, categoryGc
It should be designed so that it can function in accordance with the operating parameters set by the manufacturer and to ensure a general level of protection.
The device for level impossible, or even if there is the occasional presence of a short vapor, mist mixed with air to form
Compound explosive environment.
The level of equipment should ensure the necessary level of protection during normal operation.
3.2.6
Da class Ⅲ stage apparatus equipmentgroupⅢ, categoryDa
It should be designed so that it can function in accordance with the operating parameters set by the manufacturer and to ensure a high level of protection.
The mixture level apparatus for forming combustible dust and air or the presence of explosive atmospheres frequently occurring long consecutive.
The level of equipment should ensure the protection level prescribed level, even in the rare event of a device failure can still ensure the protection level
Do the same, its protection measures should achieve.
--- when a protection measure fails, there is at least a second independent protective measures to provide the necessary level of protection; or
--- When two separate faults occur simultaneously, should ensure that the level of protection provided.
3.2.7
Db class Ⅲ stage apparatus equipmentgroupⅢ, categoryDb
It should be designed so that it can function in accordance with the operating parameters set by the manufacturer, and to ensure a high level of protection. The level of equipment
Explosive environment combustible dust and air mixture formed may occur.
The level of equipment, even in case of equipment failure or interference frequently occurs usually must be considered, it should also ensure that the protection provided
level.
3.2.8
Dc stage device class Ⅲ equipmentgroupⅢ, categoryDc
It should be designed so that it can function in accordance with the operating parameters set by the manufacturer, and to ensure a general level of protection.
The device for level impossible, or even if there is the occasional presence of combustible dust and air is formed in a short time
A mixture of explosive atmospheres.
The level of equipment to ensure the necessary level of protection during normal operation.
3.3
Running normaloperation
Equipment, health protection systems and components within the range of design parameters.
The release of a small amount of flammable substances can be regarded as normal operation. For example. the sealing port by the pump can be seen as the release of a small amount of liquid is conveyed
freed.
Repair or fault shutdown (example. pump seals, damage to the sealing flange of the mat material due to a fault or leakage), can not see
As is normal operation.
3.4
Failure malfunction
Equipment cases, protection systems and components can not perform its intended function.
Note. many reasons for failure in this section, comprising.
--- function or processing of the material changes, changing the size of the workpiece;
--- apparatus, a system and protective element (s) of component failure;
--- external disturbance (e.g.. shock, vibration, electromagnetic fields);
--- design errors or defects (such as. software error);
--- power or interference with other operations;
--- operator control errors (especially manual mechanical).
3.4.1.
Expected failure expectedmalfunction
Device occur during normal operation of the damage or failure.
3.4.2
Rare malfunctions raremalfunction
One type of failure. It is known to occur, but occurs only in rare cases. Two independent predictable failure appearing alone did not produce
Health ignition risk, but the risk when ignited to produce co-occur, they are treated as a single rare malfunction.
3.5
The maximum surface temperature maximumsurfacetemperature
Under the most unfavorable operating conditions (but within the authorized error), or any portion of the surface of the device, or the system protection element produced most
High temperature measurement method, see 13.3.3.
Note 1. The surface temperature may be the corresponding inner surface temperature may be a temperature of an outer surface, depending on the type of ignition protection.
Note 2. In order to avoid the occurrence of ignition, the maximum surface temperature should be below the ignition temperature of the explosive mixture.
Note 3. For a dust layer and ignite see GB 12476.2.
3.6
Flameproof type typeofignitionprotection
Protection type listed in this section range.
3.7
Non-electrical equipment non-electricalequipment
Apparatus using electrical energy can not reach its intended function.
3.8
Ignition source potentialignitionsource
Any potential ignition sources may appear on the device.
3.9
Effective ignition sources effectiveignitionsource
It can ignite the explosive atmosphere ignition source.
4 categories and levels of protection equipment
4.1 device class and level of protection
Equipment for explosive atmospheres is divided into.
--- Ⅰ type, coal mine methane gas atmospheres, such devices according to their different levels of security provided is divided into two levels of protection.
Ma level;
Mb level.
--- class Ⅱ, in addition to mines other explosive gas, vapor and mist atmospheres, such equipment according to their level of security provided by different and
It is divided into three levels of protection.
Ga level;
Gb level;
Gc level.
--- Ⅲ class, other than methane, coal dust explosive atmospheres, according to their level of security provided by such devices is divided into three different security
Protection level.
Da grade;
Db level;
Dc level.
Mine equipment, the environment in addition to methane gas, may also contain a considerable amount of additional combustible gas and/or flammable dust
(Ie. Other combustible gas and/or flammable dust than methane and coal dust), the structure and tested according to the requirements of the device type Ⅰ
Combustible gas and a corresponding device class Ⅱ requirements. Such facilities shall have appropriate signs.
NOTE. methane - air mixture device class Ⅰ test does not require any additional test to verify adapted explosive dust environment.
Used with one or more versions of the ignition protection portion may be predetermined criteria listed in Chapter 1, the risk of ignition advance in accordance with 5.2 pairs
Assess the line to configure the protection measures required.
4.2 Equipment category breakdown
4.2.1 Some specific ignition protection type, class Ⅱ apparatus for explosive atmosphere according to their place of use environmental characteristics may be further explosive
Divided ⅡA, ⅡB ⅡC and three.
Note 1. This basis for classification for the flameproof enclosure, based on maximum experimental safe gap for intrinsically safe, based on the minimum ignition current (see
GB 3836.12).
Note 2. flag ⅡB stage apparatus can be used ⅡA environment level device, the same flag can be used ⅡC stage apparatus or environment ⅡB ⅡA level device.
4.2.2 Some specific ignition protection type, Ⅲ combustible dust for electrical equipment in accordance with the use of combustible dust of
Characteristics may be further subdivided into Group IIIA (combustible Feixu), ⅢB (non-conductive dust) and IIIC (conductive dust) categories.
Note. The flag ⅢB ⅢA device applicable to equipment conditions, the device type flag may be used ⅢC conditions ⅢB ⅢA or type of equipment.
4.3 particular explosive environments
The device can be used for testing a particular explosive atmosphere, for this case, the device should be a corresponding flag.
5 ignition hazard assessment method
5.1 General requirements
Apparatus for potentially explosive atmospheres shall comply with the requirements of this section, if applicable, also meet specific flameproof GB 25286 standard type
Quasi complement to this section.
All conditions devices (e.g.. rough handling, impact humidity, ambient temperature and pressure changes, the influence of chemical reagents, corrosion, vibration)
It shall be specified by the manufacturer, and indicate the required instructions for use (see Chapter 15).
If the design and manufacture of equipment with excellent technology, ignition hazard assessment to ensure that the device does not appear any valid during normal operation
Ignition source, or a device can be designated as Gc Dc stage.
Similarly, the ignition hazard assessment to ensure that the device does not have any effective ignition sources in anticipation of a rare malfunction or failure, the device can be zoned
Gb/Db class or Ga/Da level.
Appendix A device shall determine the level of protection.
5.2 ignition hazard assessment method
5.2.1 formal analysis
Responsible for all equipment and components for risk analysis, a formal risk analysis, assessment should determine what may occur in the equipment
Energy ignition source, which is a device-dependent source of ignition, whether the ignition source is a potential ignition source. Assessment should also prevent a potential list
Ignition source becoming effective ignition source measures taken. GB 25285.1 or GB 25285.2 corresponding involved must take into account all sources of ignition,
Examples of these ignition sources include. hot surfaces, fire, hot gas/liquid, a mechanical sparks, adiabatic compression, the vibration wave, exothermic chemical reaction, Aluminum
Thermal reaction, pyrophoric dust, and electrostatic discharge arc.
Protection/types of protection should be considered in the following order and/or applications.
--- can not guarantee the formation of an ignition source;
--- ensure that ignition sources ca...
|